Photosynthesis

What are the products of photosynthesis?

• Oxygen and glucose.

• Carbon dioxide and water.

• Nitrogen and glucose.

• Oxygen and nitrogen.

Plants give off _____ that animals need to take in; animals give off _____ that plants need to take in.

• Nitrogen; oxygen.

• Oxygen; carbon dioxide.

• Carbon monoxide; nitrogen.

• Hydrogen; methane.

How does photosynthesis affect the carbon cycle?

• It removes carbon dioxide from the atmosphere and converts it into organic matter.

• It increases the amount of carbon dioxide in the atmosphere.

• It has no effect on the carbon cycle.

• It converts organic matter back into carbon dioxide.

What is the significance of photosynthesis in the ecosystem?

• It produces oxygen and organic compounds for other organisms.

• It absorbs carbon dioxide and releases nitrogen.

• It generates heat for the environment.

• It creates energy from inorganic materials.

What are the two main stages of photosynthesis?

• Light-dependent reactions and light-independent reactions (Calvin cycle)

• Photosystem I and Photosystem II

• Glycolysis and Krebs cycle

• Electron transport chain and oxidative phosphorylation

What is the pigment in chloroplasts that performs photosynthesis?

• Carotene

• Xanthophyll

• Chlorophyll

• Anthocyanin

What is the role of water in photosynthesis?

• It provides electrons and protons and is split to release oxygen.

• It absorbs sunlight and converts it into chemical energy.

• It acts as a solvent for nutrients in the plant.

• It helps in the transportation of sugars throughout the plant.

What is the primary source of energy for photosynthesis?

• Sunlight.

• Water.

• Carbon Dioxide.

• Soil Nutrients.

During photosynthesis, the atoms in the water and carbon dioxide ________ to form oxygen and glucose.

• Combine

• Rearrange

• Separate

• Dissolve

Which gas is removed from the atmosphere during photosynthesis?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen